air present, present of air, wind - air moving (in some cases with appreciable pressure) from a location of significant force to a location of minimal strain; "trees bent beneath the fierce winds"; "when there isn't a wind, row"; "the radioactivity was remaining swept upwards by the air present-day https://thermalcyclingreliability89011.bcbloggers.com/34819508/considerations-to-know-about-pcb-thermal-cycling-failure-modes